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Side by side the total would be 20 inches

but there would be a space at top and bottom

Assuming they are the same depth, then the comparison is between the areas.

As the lengths are in the ratio of 10:20 = 1:2, their areas are in the ratio 1²:2² = 1:4

Thus the 20 inch Pizza has four times the area of a 10 in pizza, ie a 20 inch pizza is the same as FOUR 10 inch pizzas.

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9y ago

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